Oil-well pump.



G. E. FRITTS.

OIL WELL PUMP.

APPLICATION PILPD SEPT. 23, 1912.

1,087,360. I .Patented Feb.17,1914.

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GEORGE E. FRITTS, OF MARICOPA, CALIFORNIA.

l OIL-WELL PUMP.

Specication of Letters Patent.

Patented net. it, 15914.

Application filed September 23, 1912. Serial No. 721,778.

To all whom 'it may concern.'

Be it known that I, GEORGE E. FRrrTs, a citizen of the United States, residing at Maricopa, in the county of Kern and State of California, have invented a new and useful Improvement in Oil-Well Pumps, of which the following is a specification.

This invention relates particularly to a pumping apparatus for use in o-il wells which produce heavy crude oil, in which gas is frequently included, and its principal object is to provide a valve in a pump to remove any gas that may accumulate or pocket around the standing valve.

It is also an object to provide a casing connected with the gas valve to permit the operation of the lifting rod without the intervention of a stufling box.

It is also an object to provide means for adjusting the upper end of the chamber so that the lifting rod will engage the same and lift the chamber casing therefor a suflicient distance to unseat the valve.

It is a further object to provide a twirler in connection with the gas valve, and also to allow the head of the rod to pass entirely by the gas valve to be engaged by the cage attached to the lower end of the plunger.

To more specifically illustrate the device, attention is called tothe annexed drawings in which- Figure 1 is a central longitudinal section through the improved pump and its connections with the spacer and the standing valve shown partly in elevation. Fig. 2 is a section through the pump casing and the plunger on the line 2-2 looking in the direction of the arrows. Fig. 3 is a cross section also through the plunger and pump casing on the line 3-3 of Fig. 1 looking in the direction of the arrows. Fig. 4 is a perspective detail of the twirler.

Heretofore in the operation of oil pumps the presence of gas has frequently interfered with their efficient operation and its presence immediately above the standing valve, results in an alternate compression and expansion which does not permit the valve to be lifted and draw the oil above the same. This invention overcome-s this difiiculty and as designated more specifically, 5 is a casing of an oil pump provided with a standing valve seat 6, and suitable couplings 7. Mounted in the pump casin g is the plunger 8 provided at its upper end with a valve seat 9 which is adapted to be closed by the ball valve 10, its movement being limited by the cage 11 to which is secured the pump rod4 12 connected to suitable reciprocating means. The lower end of the plunger is provided with a valve sea-t 13 threaded into its inner bore to which is secured the cage 14C provided with a circular opening 15 adapted to allow the passage freely therethrough of the lifting rod. n The lifting rody 16 is connected with the AcageV 17 of the standing valve 18 and is also provided with a valve seat 19, terminating at the upper end of the concentric passage 20, the seat being adapted to be closed by the ball valve 21, located within the cage. The lifting rod 1G is threaded into the cage of the standing valve as shown, and its upper end is also threaded and adapted to receive the head 22 which is shown with a conical upper end 23, the head being of such a diameter that it engages with the portion of the cage adjacent to the aperture 15 when the plunger is lifted to unseat the standing valve.

Adapted to be seated on the valve seat 13 so as to be operated by an ascending volume of the oil or gas, is the valve 2&1. This valve is preferably of cylindrical form, provided with the bevel valve seat surfaces and with a concentric aperture 25 extending from top to bottom. rlhe lower part of this aperture or bore is of suiicient size to allow the easy passage of the head 22 of the lifting rod, the upper part being threaded to receive the lower end of the lifting rod casing 26. Previous to engaging the valve 24, the twirler 27 is threaded on the lower end of the lifting rod casing and acts as a lock nut to secure the valve 211 to the casing. The twirler 27 has a plurality of vanes 28 on its external periphery which extend into the path of the moving oil and revolves or twirls the valve to its seat. 1

The upper end of the lifting rod casing is preferably threaded to a greater distance than the lower end, and it is adapted to receive the threaded internal bore of the space wing-nut 29 which is closed at its upper end by the wall 30 and provided with peripheral wings 314 which extend abo-ve and below the wall 30 to centrally locate the same within the plunger. The upper extension allows a free passage of oil when in contact with the base of the valve seat 9. Also threaded to the upper end of the casing 26 is the lock nut 32 adapted to lock the space wingnut when properly adjusted to engage with the head of the lifting` rod, and insure the lifting of the valve 24 from its seat.

It can readily be seen in the operation of the device, if the standing valve is properly seated, that the downward movement of the plunger will cause the lifting rod to lift the gas valve from its seat and allow any contained medium as oil or gas to pass into the chamber oi the plunger. Reversed movement causes the valve 24C to be firmly seated and the amount of gas contained below the saine is insulicient to prevent the lifting of the valve 2l and allow the admission of more oil above the standing valve. The lower part of the aperture 25 being preferably concentric with the interior bore of the rod casing, permits the easy passage of the head 22 below the gas valve, thus permitting a greater lift, and no stuiiing box is required in the operation of the lifting rod. The conical head of the rod allows of the easy entrance into the rod chamber and the twirler turns the valve sufiiciently to insure the seat from being injured, by pounding in one direction, or sand sticking on the seat.

What I claim is:

l, An oil well pump, comprising a plunger provided with gravity operated valves on cach of its ends, a casing forming a chamber connected with the lower valve, a cage secured to said plunger below said chamber, a standing valve operating in core `junction with said plunger and a headed lifting rod adapted to be inclosed in said chamber and engage said plunger cage to lift said standing valve.

2. An oil well pump, comprising a hollow plunger, a standing valve, a headed lifting rod secured to said standing valve adapted to engage in said plunger, a valve adjacent the upper end of the plunger, a valve adjacent the lower end of the plunger and slidably mounted therein, and longitudinally inclined vanes secured to and adapted to twirl the lower valve in said plunger.

3. An oil well pump, comprising a plunger provided with an upper and lower float ing valve, a casing forming a chamber connected with the lower valve extending into the barrel of the plunger, a standing valve having a cage, a lifting rod secured to the cage of said standing valve, and a conical head secured to said rod, adapted to freely slide in said chamber and engage said plunger to lift said standing valve from its seat.

In witness that I claim the foregoing l have hereunto subscribed my name this 11th day of September, 1912.

G. E. FRTTS.

Witnesses T. H. EGKMAN, C. A. LACEY.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Entente, Washington, D. C. 

